I used Kaspersky before, nearly one and half years but still my laptop infected with virus. Then a friend of mine advised me to use "microsoftessencials" antivirus software. I'm very happy now as it always protect my laptop. I did not have any problem with virus after that. Verry effective guard. You can download it free from the internet and it is from microsoft. Therefore it works fine with all windows software. Once you download it, it will updte update daily.
Go for it pal! I can fully recommend it.